All Questions

I would like to know which architecture is more suitable when considering data sharing between tenants: a Multi-instance (Single-tenant) or Multi-tenant architecture with a database by tenant. ...

We're designing and developing an enterprise application using Spring Boot for REST APIs and Angular 8 as the web client. It's been an year since we started. When I started, I read multiple articles ...

We have a API (written in .NET Core 3.1), published to Azure Web Services. This API talks to a database for authentication. After a succesfull authentication, the API connects to other databases, ...

I am unable to find an algorithm for optimizing or eliminating Phi instructions after some Control Flow Graph modifications. I have found algorithms for destructing and constructing the SSA form, and ...

In my ASP.net core application with Angular 2+ client, I work with a complicated object graph. In the object graph I have some objects with references to each other. I have a simplification included ...

In a SyML/UML activity diagram, how do you implement an OR gate ? There immediately came to mind to use a merge node. But does a merge node always have to come after a decision node? Also, I have ...

We are building some microservices that we will likely be deploying using GAE and I am fairly new to GAE. I’ve done a lot of other development in my day, but this paradigm is a little different. I’m ...

I'm wondering how do I properly secure this example app (https://github.com/brunodrugowick/spring-thymeleaf-vue-crud-example). The app is: A Spring (Boot) app with server-rendered pages via ...

TLS 1.3 seems to have a strong benefit of ephemeral keys which adds a measure of security. Does anyone know if there are plans to incorporate it into a future spec of OPC-UA? Would it make sense to ...

So, I have an API that authenticates with Identity Server OAuth2 and gives our user a JWT token when logging in through a front end application, this is a token that has access to everything. The API ...

I'm trying to create project siteWeb and mobile app with clean Architecture and Microservices. create identity service with separate database A and make another api service with other database B. for ...

It appeared, that I have in my pet project two abstractions: asset loaders and drawing tasks. For each abstraction I have some classes representing them (currently a single class for drawing task ...

I am developing a piece of commercial software for Windows, that requires users to obtain a license key in order to use it. It is run locally by clients with the assumption that their machine may not ...

What is the best way to name two classes that describe the same object, but where one of those classes does not hold the complete information? And should I make one of the classes inherit from the ...

In my team, we use git branching to keep different features separate (of course). However, one co-worker insists on keeping these features in different files as well to avoid merge conflicts. For ...

I want to learn how to document complex libraries or software products. My goal is that the clients, the requirement team and the developers understand what the product does. I want this document to ...

I have data in my database in UTC time format in this format (pseudo): [ { "date": "Date: 2020-02-12T08:00:00+0000" "productsSold": { 0: 122, 1: 130, 2: 90, ......

So to create a concrete factory from an abstract factory, the client will usually pass something in for the abstract factory to determine what concrete factory to return. For example: public ...

Recently we had a discussion if rough DB schema (high level tables and columns) design should be part of system design phase or not. We have two confronting approaches in the company. Let's assume ...

Code below shows setting a value of an object's property and calling a private method in a setter to update the status of the object. Is this call a good practice or setter at most should only ...

So almost every post I read about oop by purists, they keep stressing about how using static methods is anti pattern and breaks the testability of the code. On the other hand every time I look for ...

The problem is the following: I have to download a set of JSON files and convert them to a certain format. There are 5 output formats (Let's call them A, B, C, D, E) and all of the downloaded json ...

While writing this question I found out that I'm faced with 2 problems: a testing one and a production one but I hope that resolving the situation can solve both issues. Now the question: I have a ...

I have a 24 hour "sliding window" sequence of "start" and "stop" events in memory comming from an iOT device. I'm only interrested in finding "stop" events followed by "start" events in order to ...

Lets say we have a layered architecture where A->B->C are three different layers. Function calls are passed from A to C and data is passed up from C to A. I think in this case A will have a reference ...

I have a class which has the purpose of providing file operations i.e. providing functionality to create the file, read, write and rewrite to the file. So, the main constituent of the class is ...

I have been developing an app that will require a cron task every minute. We are handling our cron tasks with Spring Boot Scheduling. Although, I am a little worried about the following question: ...

Why is assembly language called "assembly"? I was just watching the 1st video in the "Crockford on JavaScript" series. In it, Douglas says, ". . . the first program to make programming easier was ...

Just now I was reading a Python question on stack overflow, about clamping a list/array of results to be within a certain range. Once of the more simple answers suggested something like: ...

In a REST API, when I want to update all the properties of an entity, what is better to use in terms of good practices? PUT or PATCH? If it is better to use PATCH, why is PUT necessary? What would be ...

Considering a feature needs changes at many places in different modules of the software: UI, business logic, backend, etc. What is a good approach to do so? We are using dependency injection and ...

Suppose I have a domain entity representing a person. (Examples in TypeScript) class Person { constructor(public name: string) {} } Now, because other parts of the domain will need to reference ...

For teaching purposes, I'm trying to replicate in a more faithful way from this conceptual UML (from wikipedia): In a "so-so" real world example, in my case, families of Loans and Insurances: So, ...

I want to model a component in react, who's state is stored in redux, but I want to be able to make multiple instances of that component. The best I can come up with is to encapsulate all the ...

I am facing difficulties establishing constraints in the following situation. This is a hypothetical scenario for practicing DB designing. Imagine, a rule in a School states that the Courses there ...

In my project we start the day with one SOD script which does some start of the day functionalities. Then it generates events on its completion which triggers few more processes which start data ...

Background The high level overview of my situation is described here. I am breaking it apart into smaller, specific questions, such as this one, regarding extensive use of global variables in a ...

I would like to know if it is possible to code any function f that takes a structure S as a parameter while, in case we want to make drastic change to struct S, we can do it without touching a single ...

I'm setting up a development environment for my application. As such, to run it locally, the API dependencies need to be mocked, to keep it as lightweight as possible. The problem however is keeping ...

i have a confusion about what code should be placed in view and what in viewmodel for example click events here is a snippet code of google ToDo app example for showing application architecture (...

TL;DR How do you build an airtight license control system for your onprem application, which revokes access once subscription ends? Premise I am building this application in Python that needs to ...

When sending a request to another module and expecting a result, it seems to me there are two ways of dealing with the 'non-happy paths'. Throw an exception Return a result object that wraps ...

I'm currently working on a project which is build as a microservice architecture. We have one "Gateway" which aggregates the data coming from the different microservices to return one aggregated ...

I had a question about big scale projects. what if the team decides to change a library and therefor the codes should be changed. for example what if the team wants to change the picasso library to ...

I have a Rails app with HighSchoolTeam and ClubTeam models. I'm currently using Single Table Inheritance (STI) with Team. That means I only have a Teams table in my database, no High_School_Teams or ...

I'm working on designing a system for reporting/storing information on hardware devices (IoT-like), and trying to figure out how that would best be structured in Azure's Cosmos DB. Every device will ...

I am facing dilemma on how to best design the following functionality. What design patterns and OOD principles should I use. For simplicity sake following are basic requirements: displays type ...

I have an ASP.NET MVC application and I will need to execute a task every one minute. The task is: -> Go to database -> Check from Table 1 if a record has value = "something" -&...

At my company, we are developing pretty simple React Native and sometimes mobile-only React apps. Most of them have some similar logic, such as 'sign-in by phone' flow, some payments stuff, etc., and ...

I work in machine learning and a lot of my time is spent by taking others people code from github and testing their model or application. So I actually spend more time reading and running other ...